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Limestone Processing Plant

Limestone is a sedimentary rock composed primarily of calcium carbonate with the occasional presence of magnesium. Most limestone is biochemical in origin meaning the calcium carbonate in the stone originated from shelled oceanic creatures. Limestone can also be chemical in origin as is the case with travertine. Chemical limestone forms when calcium and carbonate ions suspended in water chemically bond and precipitate from their aquatic sources. Because of its high calcium content, limestone is usually light in color, although many variations exist. Commercially, the term limestone includes dolomite, dolomitic limestone, oolitic limestone, and travertine (Dolley 2007), a porous calcitic rock that is commonly formed near hot springs.

Limestone Quarrying Process / Plant / Mining Equipment

Extraction (more commonly referred to as quarrying) consists of removing blocks or pieces of stone from an identified and unearthed geologic deposit. Differences in the particular quarrying techniques used often stems from variations in the physical properties of the deposit itself—such as density, fracturing/bedding planes, and depth—financial considerations, and the site owner’s preference. Nevertheless, the process is relatively simple: locate or create (minimal) breaks in the stone, remove the stone using heavy machinery, secure the stone on a vehicle for transport, and move the material to storage. A flow diagram of typical quarrying operations is shown in Figure blow.

There are two processes from the raw limestone to final product-crushing process and grinding process.

If the raw limestone is bigger than the input size of your grinding mill, it should be crushed firstly. The proposed limestone crusher is MEG impact crusher, which features reasonable structure, high productivity, easy operation and maintenance and safe performance. It can crush the material whose pressure resistance strength is under 350Mpa. The limestone from the mines is conveyed to the crusher through conveyor. Crusher reduces the size of the limestone from 1m to –25 mm size. The crushed limestone will be sent by a belt conveyer to vibrating screen becoming final products or to grinding mill to fine grind. In order to control the emissions from the crusher, a suitable bag filter system will be provided.

If the raw limestone is small enough and can be directly grinded by grinding mill, it can be grinded directly. The proposed limestone grinding mill is MEG MTW series mill or high pressure mill (Raymond mill). If you need high fineness, you can choose MEG Super-micro mill, which features high capacity, low consumption, high fineness, flexible adjustment and trustworthy security.

Here are a customer cases for reference, which consists of a PE impact crusher, a high pressure mill, some vibrating screens, some belt conveyors and other auxiliary equipments. It locations at north of Ethiopia and its contracted value of all equipments is at USD $21.87 million. It can process 200t raw limestone to different size final products every day.

MEG machinery is a high technology, engineering group. We are specializing in the research, development, and production of industrial grinding mill equipment and pertinent devices. Our products have been sold to 56 countries and areas of Southeast Asia, East Europe, South America, the Middle East and Africa etc, and more foreign markets will be promoted in future.